• The Land and Water Boards have received the NWT Supreme Court’s injunction decision, halting the implementation of a restructured land and water Board in the Mackenzie Valley. The LWB’s will continue to operate in accordance with the existing legislation. Staff remain in place in all existing Board locations, and clients will see no interruption to proceedings as a result of the ruling.


  • Operation and Maintenance (O&M) Plans for Water Treatment, Sewage Treatment and Solid Waste Facilities in NWT Communities are required under the Municipal Water Licencing process.  These O&M Plans ensure proper management of these facilities and minimize environmental impacts from their respective operations.

    The MVLWB, MACA and ENR have collaborated to develop templates for Operation and Maintenance Plans for Municipal Water Licences.  These documents have been created in a fillable, user-friendly format in order to reduce the work-load on communities to complete these plans.  These documents will ultimately be used by community staff and/or their consultants. Please note that these are not meant to replace already existing O&M plans that community governments have completed. These were developed to assist with older facilities that do not have operations and maintenance plans and to provide some guidance to communities and consultants when developing O&M plans for new sewage and solid waste sites.

    Please click here to access the Item for Review on the Online Review System

  • The Land and Water Boards of the Mackenzie Valley are pleased to announce that our Engagement Guidelines for Applicants and Holders of Water Licences and Land Use Permits have been updated to improve clarity for applicants and other parties with respect to requirements for pre-application engagement. Please view the document here which can also be found under the ‘Resources’ tab along with the Boards’ other policies and guidelines.

  • The Board is pleased to release the backgrounder on how Tailings Dams are regulated and monitored in the Mackenzie Valley.  For more information please contact Patty Ewaschuk, Technical Advisor via email:

  • In December 2011, the Wek’èezhìi Land and Water Board (WLWB) and the Mackenzie Valley Land and Water Board (MVLWB) hosted “An Introduction to Risk Assessment”, which was a 2-day information session on human health and ecological risk assessment. The purpose of the information session was two-fold: to ensure that all parties participating in Board decisions involving risk assessments in the mining industry have a good understanding of the topic, and to promote an open discussion about risk assessment. During the information session, participants heard about how and when to perform a risk assessment,  community involvement in risk assessment, and some case studies of risk assessment in action. The Summary Report provides a description of the key discussion points raised during the two days of the information session.


    Click Here for the Summary Report

  • In response to the Federal Government’s Action Plan on the Northern Regulatory System, the Land and Water Boards of the Mackenzie Valley have prepared a position paper on this important issue.

  • These guidelines were prepared by WLWB staff and our technical consultants from Ecometrix Inc. and Hutchinson Environmental Sciences Ltd.  

    Final Draft – Response Framework for Aquatic Effects Monitoring